Has Missoula changed its zoning code recently?

Yes — Missoula has been rewriting its zoning ordinance alongside the state's 2023 housing-reform mandates, aiming to simplify districts and expand by-right housing types; developers should confirm current district names and standards with the city rather than relying on older code references.

Can I build a duplex on a single-family lot in Missoula?

Generally yes — under Montana's 2023 Senate Bill 323, cities over 5,000 residents, including Missoula, must allow duplexes anywhere single-family homes are permitted, though the litigation around the state's authority over self-government charter cities like Missoula is worth confirming the current status of.

How do I find current zoning for a parcel in Missoula?

The city's Development Services Division maintains the zoning map and can confirm the current district and standards for a specific address, which is especially important while the city's code rewrite is in progress.

Missoula, Montana · city zoning districts · 18 districts

Missoula, MT zoning map & districts

Missoula has been rewriting its zoning code in tandem with the state's 2023 housing mandates, replacing much of its prior district-by-district ordinance as part of a broader effort — separate from but coordinated with the Montana Land Use Planning Act — to simplify its code and expand by-right housing types. Because that rewrite has been actively moving through adoption, developers should verify current district names and standards directly with the city's Development Services Division rather than relying on older district conventions, which may no longer match the current code.

The code City of Missoula Zoning Ordinance

Missoula zoning map

Missoula's Development Services Division (Community Planning, Development & Innovation department) maintains the current zoning map and code text; given the code is being actively rewritten, confirm district names and standards directly with the division rather than assuming continuity with older maps.

There is no link to the official map here yet — confirm current district boundaries directly with the Missoula planning or zoning department.

A published summary is never the authority. The adopted ordinance and the city's official zoning map govern, and both change — verify the district and every standard on your parcel before you rely on it.

How zoning works in Missoula

Missoula is also a self-government charter city, giving it broader home-rule authority than Montana's general-government municipalities — a status that has been part of the legal debate over how far the state's 2023 duplex and ADU mandates can reach into locally adopted zoning. The Planning Board and City Council handle rezonings and code amendments, and Missoula has pursued its own affordable-housing and infill incentives alongside the state-mandated changes.

Missoula zoning districts by family

The 18 district codes below are the ones that decide most projects in Missoula, grouped by what they are for rather than by the order the ordinance prints them.

Key districts in the City of Missoula Zoning Ordinance — a curated reference, not the exhaustive list. Confirm against the current adopted code.
Code	District	What it is for
Residential 7 districts
U-R1	Urban Residential 1	Under Title 22 (effective Jul 1, 2026), which fully replaced the old Title 20 R40/R20/R8/R3/RM series the prior entries used.
U-R2	Urban Residential 2	Title 22 urban residential tier.
U-R3	Urban Residential 3	Title 22 urban residential tier.
U-R4	Urban Residential 4	Title 22 urban residential tier, highest density.
LU-R1	Limited Urban Residential 1	Lower-intensity residential tier at the urban edge.
LU-R2	Limited Urban Residential 2	Limited urban residential tier.
R-R1	Rural Residential	Large-lot rural residential district.
Mixed-use 6 districts
U-MU1	Urban Mixed-Use – Neighborhood 1	Title 22 neighborhood-scale mixed-use tier.
U-MU2	Urban Mixed-Use – Neighborhood 2	Title 22 neighborhood-scale mixed-use tier.
U-MU3	Urban Mixed-Use – Community 1	Title 22 community-scale mixed-use tier.
U-MU4	Urban Mixed-Use – Community 2	Title 22 community-scale mixed-use tier.
LU-MU	Limited Urban Mixed-Use	Lower-intensity mixed-use tier.
T-MU	Transitional Mixed-Use	Transitional mixed-use district.
Downtown / core 2 districts
D-C	Downtown Core	Missoula's downtown core district.
D-T	Downtown Transition	Transition zone around the downtown core.
Industrial 1 district
I-1	Limited Industrial	Title 22's industrial district.
Special purpose 2 districts
CD-1	Civic District 1	Civic/institutional use district.
OP-1	Open Space	Parks and open space district.

Missoula zoning — common questions

Has Missoula changed its zoning code recently?: Yes — Missoula has been rewriting its zoning ordinance alongside the state's 2023 housing-reform mandates, aiming to simplify districts and expand by-right housing types; developers should confirm current district names and standards with the city rather than relying on older code references.
Can I build a duplex on a single-family lot in Missoula?: Generally yes — under Montana's 2023 Senate Bill 323, cities over 5,000 residents, including Missoula, must allow duplexes anywhere single-family homes are permitted, though the litigation around the state's authority over self-government charter cities like Missoula is worth confirming the current status of.
How do I find current zoning for a parcel in Missoula?: The city's Development Services Division maintains the zoning map and can confirm the current district and standards for a specific address, which is especially important while the city's code rewrite is in progress.

Working in Montana? Get on the list.

The parcel layer lands in the order demand does. Illinois went first because that's where the deals were; the next state is decided by who tells us what they're trying to underwrite. Tell us where you're building and what you wanted to run — you'll hear from us when Montana opens, and sooner if we need a test parcel.

Keep reading

← Montana zoning — who holds the zoning power in Montana, under which enabling statute, and the reforms that override local rules.

Other Montana cities

The zoning reference → — every state, plus city-level district guides like this one.

Missoula zoning summaries on this page are provided for information, not legal advice. Confirm every project against the current adopted code for the jurisdiction.